pi2eqx5864d Pericom Semiconductor Corporation, pi2eqx5864d Datasheet - Page 7

• Manufacturer Part Number: pi2eqx5864d
• Description: 5.0gbps 4-lane Pcie? 2.0 Redrivertm With Equalization, Emphasis, & I2c Control
• Manufacturer: Pericom Semiconductor Corporation

Loopback Operation
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Loopback Modes
Normal Operation
Broadcast Mode
A0
A0
Loopback Mode
A0
A0
A0
A0
A0
A0
B0
B0
B0
B0
B0
B0
B0
B0
A0
A0
Demux Mode
B0
B0
Mux Mode
A0
A0
A0
A0
A0
A0
A0
A0
B0
B0
B0
B0
A0
A0
B0
B0
B0
B0
B0
B0
NORMAL MODE
A0Rx to A0Tx, B0Rx to B0Tx
BROADCAST MODE
A0Rx to A0Tx and B0Tx
LOOPBACK MODE
A0Rx to B0Tx
DEMUX MODE
Solid Line
A0Rx to A0Tx
DEMUX MODE
Dashed Line
A0Rx to B0Tx
MUX MODE
Solid Line
B0Rx to B0Tx
MUX MODE
Dasked Line
A0Rx to B0Tx
10-0172
5.0Gbps 4-Lane PCIe® 2.0 ReDriver™ with Equalization
7
CONDITIONS
LB_A0B0# = 1
INDIS_A0 = 0
OUTDIS_A0 = 0
INDIS_B0 = 0
OUTDIS_B0 = 0
LB_A0B0# = 0
INDIS_A0 =0
INDIS_B0 = 1
OUTDIS_B0 = 0
LB_A0B0# = 0
INDIS_A0 = 0
OUT_DIS_A0 = 1
INDIS_B0 = 1
OUTDIS_B0 = 0
LB_A0B0# = 1
INDIS_A0 = 0
OUTDIS_A0 = 0
INDIS_B0 = 1
OUTDIS_B0 = 0
LB_A0B0# = 0
INDIS_A0 = 0
OUTDIS_A0 = 0
INDIS_B0 = 1
OUTDIS_B0 = 0
LB_A0B0# = 1
INDIS_A0 = 0
OUTDIS_A0 = 1
INDIS_B0 = 0
OUTDIS_B0 = 0
LB_A0B0# = 0
INDIS_A0 = 0
OUTDIS_A0 = 1
INDIS_B0 = 0
OUTDIS_B0 = 0
Each lane provides a loopback mode for
test purposes which is controlled by a
strapping pin and I
pin controls all lanes together. When this
pin is high normal data mode is enabled.
When LB# is low the loopfeature mode is
enabled. The adjacent figure diagrams this
operation. Loopback is not intended to
be dynamically switched, and the normal
system application is to initialize to one
configuration or the other.
The Loopback mode can also support mux/
demux operation. Using I
tion, unused inputs and outputs can be
disabled to minimize power and noise.
www.pericom.com
PI2EQX5864D
2
C register bit. The LB#
2
PS 0.1
C configura-
06/04/10